967、An official organization that gives approval to something.

579 Moment divided by a constant is usedto to simplify balance calculations by reducing the number of digits

578 MELT

577 Manufacturers may also choose togroup related systems where the simplicity of the product permits.

576 MAKE SURE THAT THE TOOLS DO NOTINTO THE ENG INE.

575 IMAKE SURE THAT THE FLAPS ARE RETRACCTED AND THE AILERON TRIM HANDWHEEL IS IN THE ZERO POSITION. R

574 Maintenance information needs to be continually updated.

573 loosely

572 LIVE

571 LEVEL

570 leak